Abstract: For the difficulties in mining of thin coal seam and complex coal seam，the scheme that adopts the surface miner is proposed.In order to explore the application conditions of surface miner，an evaluation model of complex coal seam was established and a detailed investigation on transportation means of material and mining parameters was made.The analysis on a open pit located in Inner Mongolia indicated that the recovery rate increased by 2.93% and the refuse content declined by 17.23% and the calorific value of ROM coal increased by 1672.25 kJ/kg by using surface miner for mining.Directly matched with the miner，the dump truck was adopted for loading material at each layer of coal with minimum working platform of 30 m.The scheme that adopts surface miner at complex coal seam remarkably enhanced coal quality，effectively increased resource recovery and eventually maximized the economic benefits of open pits.

Key words: Surface miner, Evaluation model, Transport mode, Mining parameter